Fault Section Estimation in Power Systems Using the
Protective Devices Settings and Search Algorithm of
Isolated Sections
(2013)Аннотация
Fault section location is a critical task when a severe
disturbance is caused by a failure on a transmission line. In
order to avoid further economic and social costs by load
interruptions, intelligent systems have been successful in
dealing with fault location problems. This paper presents a
novel deterministic method to locate fault section on electrical
power systems with the aim of assisting to command center
operators to make decisions in cases of disturbances. The
methodology proposed is based on the features of the electrical
system, such as: state of relays and circuit breakers; impedance
of transmission lines and transformers and adjustment of
impedance relays.With the information provided by the expert
system proposed, the operator has the advantage of making
decisions more accurate in less time, based on information
obtained from own electric system; unlike other methods
already proposed, which were based on uncertainties and
approximations.